INTORDUCTION : Drones are Unmanned Aerial Vehicles (UAVs) autonomously or remotely operated aircrafts, fly without on-board human pilot operated from the ground. Drones are used for entertainment, civilian applications, wildlife, remote sensing, surveying and photogrammetry, smart agriculture, disaster surveying and management, forestry, energy harvesting, and housing renovation, scientific applications, and military applications (surveillance and reconnaissance and attacking the enemy). During the flight drones may face a variety of problems internal (e.g., an electrical circuit failure, broken connection, or mechanical damage) and external (interference of an external obstacle such as birds or hostile force) and drones can become unmanageable, fall down and land on hard surface and damage resulting in large Financial losses in addition to lost equipment and information. Parachute recovery is an important tool to avert damages and casualties caused by aircraft failures. Therefore, recovery parachutes have been developed for different weight class of Drones.